Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hang cua » mang cua, hang ca, huong cua
hieu ve » hieu va, hieu van
vu sach » vu bach, su sach, vu khach
v nang » va nang, vu nang, van nang
ve cam » ve cham, ve cac, va cam
y nang » ky nang, ly nang, may nang
luc va » duc va, tuc va
loc va » hoc va
cua va » cua vat, chua va, cua van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((y nang) or (v nang)) xa hoi. hieu ve cam ((luc va) OR (loc va)) hang cua va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((y nang) OR (v nang)) xa hoi. hieu ve cam ((luc va) OR (loc va)) hang cua va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((y nang) or (v nang)) xa hoi. hieu ve cam ((luc va) OR (loc va)) hang cua va triet".
• Adding a wildcard symbol may retrieve word variants: vu sach ((y nang) or (v nang)) xa hoi. hieu ve cam ((luc va) OR (loc va)) hang cua va triet*.